Home / 20,864.92-28,792.92-11,433.28

Finding the Fourth Proportional to 20,864.92, 28,792.92 and 11,433.28

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Solution

The fourth proportional to 20,864.92, 28,792.92 and 11,433.28 is: 15,777.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.92 : 28,792.92 = 11,433.28 : x
  2. Step 2: Convert to fraction form
    20,864.92/28,792.92 = 11,433.28/x
  3. Step 3: Cross multiply
    20,864.92x = 28,792.92 × 11,433.28
  4. Step 4: Simplify right side
    20,864.92x = 329,197,516.38
  5. Step 5: Solve for x
    x = 329,197,516.38/20,864.92
  6. Step 6: Final answer
    x = 15,777.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.